Needle tip guard for percutaneous entry needles
First Claim
1. A needle protective device for use with a percutaneous needle comprising:
- a) a needle guard slidably mounted on a percutaneous needle said needle having a proximal end and sharpened distal end, said needle having at least one change in profile formed upon the length thereof, said guard having a proximal end and a distal end, said guard containing a moveable needle trap that is transitional between a first retracted configuration wherein said trap is oriented against said needle and a second operative configuration wherein said needle trap traps said sharpened distal end of said needle; and
b) a limiting apparatus formed upon said needle guard and engageable with said change in profile formed upon said needle for limiting the distance said needle guard slidably travels upon said needle, said limiting apparatus being operative to engage with said change in profile substantially simultaneously with when said needle trap transitions from said first retracted configuration to said second operative configuration.
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Accused Products
Abstract
A needle tip protective device for use with percutaneous entry needles. In one embodiment, the needle tip protective device includes a needle guard slidably mounted on a hypodermic needle, the latter having a needle tip located at the distal end thereof, and a change of profile formed medially there along. The needle guard is movable along the hypodermic needle and engageable with the change in profile formed thereon. The engagement with the change in profile is configured to correspond with the ability of the needle trap to entrap the needle tip once the needle trap has advanced the sufficient distance distally along the hypodermic needle. In further refinements, the needle trap may be biased toward the distal needle tip of the needle.
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Citations
13 Claims
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1. A needle protective device for use with a percutaneous needle comprising:
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a) a needle guard slidably mounted on a percutaneous needle said needle having a proximal end and sharpened distal end, said needle having at least one change in profile formed upon the length thereof, said guard having a proximal end and a distal end, said guard containing a moveable needle trap that is transitional between a first retracted configuration wherein said trap is oriented against said needle and a second operative configuration wherein said needle trap traps said sharpened distal end of said needle; and
b) a limiting apparatus formed upon said needle guard and engageable with said change in profile formed upon said needle for limiting the distance said needle guard slidably travels upon said needle, said limiting apparatus being operative to engage with said change in profile substantially simultaneously with when said needle trap transitions from said first retracted configuration to said second operative configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification